matlabconcat.jl

#taken from http://www.tutorialspoint.com/matlab/matlab_matrix_concatenation.htm
a = [ 10 12 23 ; 14 8 6; 27 8 9]
    10    12    23
    14     8     6
    27     8     9
b = [ 12 31 45 ; 8 0 -9; 45 2 11]
    12    31    45
     8     0    -9
    45     2    11
c = [a, b]
    10    12    23    12    31    45
    14     8     6     8     0    -9
    27     8     9    45     2    11
d = [a; b]
    10    12    23
    14     8     6
    27     8     9
    12    31    45
     8     0    -9
    45     2    11